Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA.
Opt Lett. 2010 Dec 1;35(23):3952-4. doi: 10.1364/OL.35.003952.
We study the behavior of Airy beams propagating from a nonlinear medium to a linear medium. We show that an Airy beam initially driven by a self-defocusing nonlinearity experiences anomalous diffraction and can maintain its shape in subsequent propagation, but its intensity pattern and acceleration cannot persist when driven by a self-focusing nonlinearity. The unusual behavior of Airy beams is examined from their energy flow as well as the Brillouin zone spectrum of self-induced chirped photonic lattices.
我们研究了从非线性介质到线性介质传播的 Airy 光束的行为。我们表明，最初由自散焦非线性驱动的 Airy 光束会经历异常衍射，并在后续传播中保持其形状，但当由自聚焦非线性驱动时，其强度模式和加速度不能持续。通过分析自诱导啁啾光子晶格的布里渊区谱以及能量流，研究了 Airy 光束的异常行为。
